Pitman-rod



(No Model.)

A. A. 81,- A. J. BROOKS.

PITMAN ROD.

.No. 317,919. Patented May12',1885.

' lilllllllllllll IIIINI H N PETERS. Pholu-Lilhognpher, Wzlhingtnn, D. C.

UNITED STATES PATENT OFFICE.

AMBROUS ADAM BROOKS AND ANDREW JACKSON BROOKS, OF MAOOMB,

. TEXAS.

PlTAN-ROD.

tEiPEOIPICATION forming part of Letters Patent No. 317,919, dated May 12,1885.

Application filed March 24, 1885. (No model.)

To all whom it may concern:

Be it known that we, AMBROUS A. BROOKS and ANDREW J. BROOKS, of Maconnb, in the county of Grayson and State of Texas, have invented certain new and usefullmprovenients in Pitman Rods; and we do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it pertains to make and use it, reference being had to the accompanying drawings, which form part of this specification.

Our invention relates to an improveinentin pitman-rods; and it consists in the combination of the fly-wheel, made heaviest upon one side, with the wrist-pin, connecting-rod, and the part which is to be attached to the reaper or mower knife, as will be more fully described hereinafter.

Figure 1 is a vertical section taken through the wheel and pin. Fig. 2 is a side elevation of our invention complete, partly in section. Fig. 3 is a plan view.

A represents the fly-wheel, which is made heavier at B than at any otherportion. This heavy portion is madejust opposite the point at which the wrist-pin O is attached to the wheel, for the purpose of balancing the wheel, and causing it to run more evenly than it would do if the wheel were not made heavier on one side. The wristpin G is made square where it passes through the wheel, and a nut is applied to that end which projects through the wheel, for the purpose of securing it in position. This wrist-pin is made round where it passes through the boxing upon the end of the pitman, and has the head D formed upon the end which comes next to the boxing, for the purpose of securing it in place. The two parts of the boxing are held in contact with the wrist-pin by means of a strap, E, and the two keys G H, which secure the strap to the end of the connecting-rod. The two keys pass through the two slotted ends of the strap and a slot in the end of the connecting-rod, and these keys are held in any desired position by means oi'setscrews I, which are passed through the side of the connecting-rod. and made to bear against the two keys, as shown. Owing to the constant shaking of the different parts these keys, when not locked in place, are liable to drop out, and 'thus disable the machine. \Vhere set-screws are used, as here shown, these parts cannot become displaced. To the opposite end of theconnectingrod is attached casting L, which has the flanges N formed upon opposite edges, and through which flanges is passed the couplingpin N. This end of the connectingrod is also provided with a slotted strap, which secures the parts of the boxing directly to the end of the connecting-rod by means of keys, which are also held in place by means of set-screws.

Over the top of the wrist-pin and the connecting-pin just described are formed openings in the straps, and in which openings oilcups are fastened, so as to-keep the parts constantly lubricated.

The flanged casting is to be secured to the knife of the reaper or mower in any suitable manner.

Having thus described our invention, we claim-- The combination of the fly-wheel, made heaviest on one side, the wrist-pin, the boxing, the slotted strap, the connecting-rod slotted at each end, the keys, and the setscrews for holding the keys in position, substantially as set forth.

. In testimony whereof wesaffrx our signatures in presence of two witnesses.

AMBROUS ADAM BROOKS. ANDREW JACKSON BROOKS. WVitnesses:

Josnrn KINOAID JAMIsoN, ALBERT CHANEY. 

